I have installed OEL-5.8 (64bit) on VMWare-8 , created two virtual nodes for RAC DATABASE-10gR1 installation, Successfully installed CRS and ASM (raw disks) on these nodes. While created diskgroup (TEST_DATA), +ASM 1 is able to mount it but while trying to mount the disk group (TEST_DATA) on + ASM 2 , I am getting the following error. While I created a disk-group in +ASM2 and tried to mount on +ASM1 , I encountered the same error. The ASM listeners were up and running and showing correct status on CRS.

ERROR

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Could not mount the diskgroup on remote node rac1 using connection service rac:1521:+ASM1 Ensure that listener is running on this node and the ASM instance is registered to the listener. Received the following error

ORA-15032: not all alterations performed

ORA-15130: diskgroup "TEST_DATA" is being dismounted.

we have successfully upgraded all the PROD instances to 11gR2, except this old system (10g). Our intention is to upgrade this old 10gR1 two node RAC database to 11gR2 (and stuck with this error while doing a POC).